hirst



J. HIRST.

WARP DELIVERING MEANS FOR LOOMS. APPLICATION man SEPT. ao, |916.

l 3 1 2, 847 i Patented Aug. 12, 1919.

2 SHEETS-SHEET l.

J. HIRST. WARP DELIVERING MEANS FOR LOOMS.

APPLICATION FILED SEPT-30, |916' 1,312,847. Patented Aug. 12,1919.

2 SHEETS-SHEET 2- @WMM - i UNITED STATES PATENT OFFICE. r

.Turns nmsr, or MELnosE, mssacnusnr'rs, AssIGNon 'ro cnnmracx Metronom me comm, or rnwrnoxnr, nnonn ISLAND, A conzeomrronor naomi rsmim wAnP-DEnrvEnnve MEANS ron Looms.

Speomcation of Letters Patent.

lPatented Aug. 12, 1919.

Application mea september 3o. 191e. serial No. 123.154.

To all whom t may concern:

Be it known that I, JAMES Hras'r, a citizen of Great Britain, residing at Melrose in the county of Middlesex and State of Massachusetts, have invented new and use- Improvements in Warp-Delivering Means for Looms, of which the following is a s ecilication. e object of the present invention is to provide improved warp-delivering means or looms, particularly circular looms that weave tubular fabric.

It is desirable to maintain uniform ten' sion on the several warp members as the latter are interwoven with the iilling member or members, and this is es ecially so in the case of circular looms. rdinarily looms for weaving flat sheet fabric are provided with rotatable warp beams on which the warp members are wound, and such warg ams are usually provided with ban brakes or other friction devices arranged to resist unwinding movement to keep the warp members under tension. In such cases the tension of the individual warp members is not necessarily of the same degree in any two of them, which condition is due, to a great extent, to the fact that the warp members are wound upon themselves on the beam.

My present invention provides a warpdelivering apparatus comprising a creel from the. spools of whichthe strands are let through guides, and around a tension drum, and thence through, ,under, or over other guides to the loom in which they serve as the warp members to be woven. The drum referred to is provided with braking means that maintains the necessary tension of the war members in the loom and that performs t e samel function as the well known warp beam that is provided with-a.

brake, but the tension drum of my invention accomplishes a result that theA well known warp beam does not accomplish, that is, it makes the tension uniform as to the individual warp members.

I have stated that the present invention is designed especially for use 'in conjunction with circular looms, butl it is nevertheless adapted -to be used in conjunction with looms for weaving fiat sheet fabric.

Of the accompanying drawings, which illustrate one form in which my present invention may' be embodied:

Figure 1 warp members from the one bear under gravity of the spools to exert a slight retardmg acrepresents an elevation, front or'- rear, of a creel, a stand therefor, and means for equalizing the tension of the vseveral strands. One of the brake drums is shown in section in this ligure. Fl. 2 represents a vertical section includ- 1ng t V e creel stand and the lower portion of the creel, and includes conventional representations of two circular looms taking I warp-delivermvapparatus.

1g. 3 represents an elevation of a portion of a take-up device that engages the strands between the tension drum and the creel.

Fig. 4 represents an end elevation of the device shown by Fig. 3. Fig. 5 represents a top plan view of a portion of a guiding device through which the strands are drawn after leaving the tension drum. Fig. 6 re resents a top plan view of a thread gui e through which the strands pass from the creel to the tension drum.

The same reference characters indicate the same parts wherever they occur.

The circles A. and B are conventional representations of circular looms. Their structural details are immaterial as far as the present invention is concerned, foranyone f skilled in the art of circular looms will 'group by reference letter b. The strands or warp members that are drawn from the spools are indicated respectively at a and The spools are mounted upon spindles 10, and the latter are affixed to frame members 11. The paddles indicated at 12 are mounted upon rods 13 and are arranged to against the peripheries tion on the unwinding movement of the latter.

The creel is mounted upon a stand indicated as a whole at 14. The stand is provided with two thread-guides 15, 15, one for each group of spools. Each threadguide consists of a metallic bar and is provided with a series of holes 15', one' such hole being provided for ,each strand or wa member. V From the lthread-indes 1,5, 15 the warp members pass' td ta e-up de y vice 16, preferably 'of description passingthrough another guide-bar 17 before reac ing the take-up. The chief-function of the guidesloargla?Y is `to gather the strands of the uvam-groups .together into a common lane so u device will have t e same effect in both c aracter and degree on the strands of both groups. :Guide har zl7-isfprovidedwith suitable holes, one for eachustrand, to all intents and purposes like the holes 15 in the bars15y, 15.

The takequp device 16. comprises a horizontalbar 18twosw1ng1rg arms 19, 19 supporting the latter by its ends, a series of guide pins 20 carried by said bar, anda conning rod 21 arranged parallel to bar 18 and supported by ears 22 formed upon or attached to the latter. The ends of bar 18 are square, as indicated in Fig. 4, to facilitate rigid. connection with the, arms 19 so that the twoarms and bar .collectively .form arigid unit., This rigid unit is 'hung on pivots 23 an V perpendicular position, 'but is held yout of perpendicular, as shown by Fig. .2by the stretchers of the strands th'atpassfrom the guide bar 17 to the tension drum 25. VSanne of the strands, as b,kpass once around the drum 25 and thence'to a guide 26, while others, as a', I may pass slightly more F,than once around 4h drum and thence to a similarguide 27 at the opposite side of the stand from the'guide26. vIt will be understood, however, that instead of the duplex arrangement shown, `all the stran s may Apass througheither one ofthe .guides 26, 2 7,` and thence to one loom instead oft being divided to supply two looms. As the strands leave the guides -26 and 27 they pass under idle guide rolls 28, thence togguiding elements'29 of any form and arrangement suitable to guide them to the looms. For convenience the strands Z2 are shownas being conducted to loom B, andstrands a toeloom A..

The tension drum.25 is provided with a smooth metallic (surface, being .preferably a shell made of thin sheetunateriah -It is sustained, in the 'present instance, by. brake drums 30,l 3Q, oneat each end, andsaid brake drums are keyed or' otherwise atiixed to shaft 31. This shaft is mounted in bearin 32 and is preferably provided-with haiidwheels 33 whereby it may be turned to turn back, the drum iwhenever, it necessary; to unweave the fabricto correctdef'e'cts. Each brake drum is engaged by a. flexible ,brake band 34. The ends lof each band -'are connected to tension rods 35, 35. These rods ,extendithrough XturesSG and arel rovided withhelical compression springs' respectively, and with nuts 38'for"'b,lding lsaid springs under. compression. The V'shell of the idrum, being made of thinheet metal, might be twisted or"buckled-by` torsional stress if d normally would-hang in la.

that the take- 'between its ends, said thebraking action were applied only to one end thereo and so might maintain the same degree of ,tension on all the strands.

as shown# The cylindricity of the drum is preserved by reinforcin -disks (not shown) disks fitting the shaft 31. @husathe shell is prevented efrnmbeing buckled or sprungbyv the tension of the Ksuch turning back would produce being those of the guidesv 26 v and 27.

strands.

The thread-guides 26 Iand 2.7 ,are referably'made according to, the details wn by Eig- 5 Each wle-comprises a '..or-

zontal bar -39a seriesoffguidepins 40', and' a confining rod .41. The bar-39 islprvi ed,

with ears42 for holding the rod '41. e spaces 13,I eachof .which is bytwo contiguous pins 40, and by bar` 39,and Vrod 41, are the spaces through are passed individually. l able from'ears ,42, in order to enable the strands to be drawn in laterally ,instead of being threaded through thespaces 4,3; ,and L fterv the strands have all been arran edin their respectiveplaceswith thenpins 0 separatins'them 011e fomenother, .the Corning ,rod .41 maybe insertedY endwisefthrou h the ears 4,2, one end of the rod being strai t to ermit such insertion.

he hreadfguiding yelements of'= thetake- 1111,16 are, to all vintentsand purposes, llike rllhe strands are separated one from anotherby the .pins 20 l1ajtndpass through the spacesk Iindicated at Y IThe Vfunction of the take-up 16 is to take up whatever slack may occur vbetween -the creel and the tension. drum. Forl example, if it should be necessary to turn-back the drum incidentally to correcting a defect in the woven fabric, or for any 'other pur hose,

l 'slac 'hetween the drum and the creel. 11n such case the take-up, always tendingto swlngto a perpendicular position,'would take'up the slack caused "by the vlloack returning, and wouldthereaftergive up the, slack when the strands are 'fed'forward )The tension device does not necessarily occupy any predeterminedangular position when the strands are *l 'fed forward, vfor its angular position would 'sistance tothe @Winding ofthe Sposffff l claim:

ing a warp creel, 'arotatabletension and around which the strands from sai jcreel It is for this reason that two brakesare provided ibe determined by the Idegree of re- L1A warp- 'delivering apparatus compris.'

tions, and `ajlcrake arranged to retard the zrotation of the,d rum 2. A warp yde shvering apparatus ',conipris. ing'a stand, a warp creel' mounted oli said stand adapted tov carry sgrwols of warp iso material, a guide having eyes-through which the several -warp strands are adapted to pass, a drum mounted on said stand in position to eng-age on its peripheral surface the warp strands passing from said guide, a brake arranged to retard the rotation fof satid drum, and a plurality.- of separate guides to each of which a portion of the warp strands pass from the drum, thel strands passing said separate guides being led to separate destinations.

3. A warp deliveringl apparatus comprising a stand adapted to Ibe placed/ on the Hoor, a warp creel mounted on top of said stand adapted to carry spools'of warp material, a guide beneath eyes through which the several warp strands' are adapted to pass, a drum mounted on said stand beneath said guide in position to engage on its peripheral surface warp strands passing from said guide, a brake arranged to retard the rotation of said drum, and a guide to which the warp strands pass from the drum and from which they are led to their destination. Y

4. A warp delivering apparatus comprising a stand, a drum mounted/ rotatably in said stand, warp thread guides arranged in said stand below and on opposite sides of said drum, a brake arranged to retard rotation of the drum, a warp thread guide Aon the stand above'the drum, and a creel mounted on the stand carrying spools of Awarp material.

45. In a warpv delivering apparatus, l a stand, a tension drum supported rotatably by said stand, brake drums connected with the opposite ends of said tension drums, loaded brake bands paming around. andi bearing on said brake drums andanchored to `parts of the stand, said tension drum being adapted to have warp threads wrapped around it, and guides though which the strands and away from the drum.

6. In a warp .delivering apparatus, a stand, a'tension drum supported rotatably by said stand.v brake drums `connected with the opposite ends of said tension drums,

lloaded 'brake bands passing;l around and bea ring on said to parts of the stand, said tension drum being adapted to have warp threads wrapped around it, and guides through which the strands pass in their course to and away from the drum, one of said guides being movalble and arranged to bear athwart the threads, whereby to take up and pay out automatically'any slack in the threads.

7. 'In a warp delivering apparatus, aA

stand, a. tension .athwart the threads,

said creel having' tial part ofthe terial,

nthread` guiding lpins on said bar in pass in their course -to' brake drums and anchored signature.

drum supported rotatably by said stand,.brake drums connected with the opposite ends of said tension. drums, loaded brake bands passing around and bearing on said brake drums :and Aanchored to. partsof the stand, said tension drum belng adapted to have warp threads.

wrapped around it, a creel supporting thread masses in position for threads to be led .therefromrto the ltension drum, and a guide through lwhich the threads pass on their vway to said drum, said guide 'being movably mounted and arranged to bear whereby to take up slack therein.

8. The combination of a pluralityv off looms. a warp-creel, an elongated rotary tension drum, the lstrands; from said creel extending to said drum and around a substanperiphery of the latter, each of said strands on said -periphery,.said strands being d1- vided into groups after leaving said drum and said groups extending to said looms respectively, and a 'brake arranged to act on said drum.

9. In 'a warp delivering apparatus,v a stand, a creel carrying spools of warp maai tension drum mounted on said stand in position to receive on its periphery -the warpd strands from said creel, a rake to retard rotation of said drum, anda yield. ingly mounted takel up between and drum, having eyesto admit the several war strands and separate them -from one anot er ontheir way to the drum.

10. In a warp delivering apparatus a element comprising a bar,

pins projecting from said bar between which A such threads mayv pass, and by which the threads are kept apart from one another,

and a confining rod dtachablyconnected withsaid bar stantially parallel therewith across the pins to confine the the pins.

In testimony whereof I have aixed my JMES mns'r.

eyes vdefined between the A and .normally arrangedv su'b' having independent bea-ring the creel series, and a confining yrod mounted detachably on saidbarl norpins in substantialparah.

threads in the spaces between 

